Update mypy/config_parser.py: slightly friendlier error message

wyattscarpenter · hauntsaninja · web-flow · commit 6eb6ab9570f4 · 2025-08-03T13:33:12.000-07:00
I'm committing this because it's very convenient through the web interface, but I will presumably have to make a second commit to change the test output that depends on this

Co-authored-by: Shantanu &lt;12621235+hauntsaninja@users.noreply.github.com&gt;
diff --git a/mypy/config_parser.py b/mypy/config_parser.py
@@ -66,7 +66,7 @@ def try_split(v: str | Sequence[str] | object, split_regex: str = ",") -> list[s
 
     def complain(x: object, additional_info: str = "") -> Never:
         raise argparse.ArgumentTypeError(
-            f"Expected a list or a stringified version thereof, but got: '{x}', of type {type(x)}.{additional_info}"
+            f"Expected a list or a stringified version thereof, but got: '{x}', of type {type(x).__name__}.{additional_info}"
         )
 
     if isinstance(v, str):

Original file line number	Diff line number	Diff line change
`@@ -66,7 +66,7 @@ def try_split(v: str \| Sequence[str] \| object, split_regex: str = ",") -> list[s`
`66`	`66`
`67`	`67`	`def complain(x: object, additional_info: str = "") -> Never:`
`68`	`68`	`raise argparse.ArgumentTypeError(`
`69`		`- f"Expected a list or a stringified version thereof, but got: '{x}', of type {type(x)}.{additional_info}"`
	`69`	`+ f"Expected a list or a stringified version thereof, but got: '{x}', of type {type(x).__name__}.{additional_info}"`
`70`	`70`	`)`
`71`	`71`
`72`	`72`	`if isinstance(v, str):`